The Messenger of Allah ﷺ said, "Help your brother, whether he is the wrongdoer or the wronged."They asked, "Messenger of Allah, we understand helping him when he is wronged, but how do we help him when he is the wrongdoer?"He replied, "By restraining his hands."
قال رسول الله ﷺ: انصر أخاك ظالما أو مظلوما. قالوا يا رسول الله، هذا ننصره مظلوما، فكيف ننصره ظالما؟ قال: تأخذ فوق يديه.